New York Natural Heritage Program Rare Plant Status List May 2004 Edited By
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New York Natural Heritage Program Rare Plant Status List May 2004 Edited by: Stephen M. Young and Troy W. Weldy This list is also published at the website: www.nynhp.org For more information, suggestions or comments about this list, please contact: Stephen M. Young, Program Botanist New York Natural Heritage Program 625 Broadway, 5th Floor Albany, NY 12233-4757 518-402-8951 Fax 518-402-8925 E-mail: [email protected] To report sightings of rare species, contact our office or fill out and mail us the Natural Heritage reporting form provided at the end of this publication. The New York Natural Heritage Program is a partnership with the New York State Department of Environmental Conservation and by The Nature Conservancy. Major support comes from the NYS Biodiversity Research Institute, the Environmental Protection Fund, and Return a Gift to Wildlife. TABLE OF CONTENTS Introduction.......................................................................................................................................... Page ii Why is the list published? What does the list contain? How is the information compiled? How does the list change? Why are plants rare? Why protect rare plants? Explanation of categories.................................................................................................................... Page iv Explanation of Heritage ranks and codes............................................................................................ Page iv Global rank State rank Taxon rank Double ranks Explanation of plant legal status .......................................................................................................... Page v Federal legal status New York State legal status Explanation of phenology list ............................................................................................................. Page vi Acknowledgements............................................................................................................................ Page vii Changes since the May 2003 rare plant status list ............................................................................ Page viii Rare plant active inventory list (alphabetical by species).................................................................... Page 1 Rare plant watch list (alphabetical by species) .................................................................................. Page 41 Phenology list..................................................................................................................................... Page 49 Rare bryophytes of New York (alphabetical by species)................................................................... Page 67 NYNHP Review List ......................................................................................................................... Page 69 New York Protected Plant List ...................................................................................... Appendix I: Page 75 Natural Heritage reporting form County map Cover Photos: Upper left – Leedy’s Roseroot, Sedum integrifolium ssp. leedyi Upper right – Southern Arrowwood – Viburnum dentatum var. venosum Lower left – Spreading Globeflower - Trollius laxus Lower right – Northern Blazing-star – Liatris scariosa var. novae-angliae Photos by Steve Young. This report should be cited as: Young, Stephen M. and Troy W. Weldy. 2004. New York Rare Plant Status List. New York Natural Heritage Program, Albany, NY. May 2004. 90 pages. New York Natural Heritage Program Page i New York Natural Heritage Program Rare Plant Status List WHY IS THE LIST PUBLISHED? The New York Natural Heritage Program publishes the rare plant status list: 1. to assist the conservation and protection efforts of government agencies, private organizations, and the general public, 2. to provide information for use in the environmental review process, 3. to provide information to educators and researchers about New York's rare plants, and 4. to assist those in search of rare plants. WHAT DOES THE LIST CONTAIN? The list contains the name, Heritage rank, counties of occurrence, and legal status for all plants that the NY Natural Heritage Program tracks. The active inventory list contains most plant taxa (species, subspecies and varieties) that have fewer than 30 occurrences in the state and are considered highly vulnerable to extirpation. They have been documented by a Heritage report and/or a herbarium specimen in the last 20 years (575 taxa). It also contains rare historical taxa, those plants that have not been documented in the last 20 years (63 taxa), and the extirpated taxa, those that are considered no longer extant in the state (63 taxa). The watch list contains taxa that are considered rare, uncommon, or declining in numbers and need continued periodic monitoring to decide if they should be actively inventoried or removed from the list (69 taxa). We have also included a review list that contains species that may be rare within New York, but more work is needed to determine their distribution within the state, resolve taxonomic/identification problems, etc. before their state rarity can be determined. This list is not synonymous with the New York State DEC Protected Native Plants list (August 2000). The Heritage list contains all plants that are rare, while the DEC list contains native plants that are protected by state law. Almost all rare plants that are on the Heritage Active List are listed by the state. The DEC Protected Plant List is included in New York's rare plant law that is open to public comment and approval by the state legislature. The Protected Plant List also includes the category of Exploitably Vulnerable (plants that may be exploited, but not necessarily rare [e.g, all orchids, most ferns]). For your convenience the DEC Protected Plant List is included at the end of this publication. HOW IS THE INFORMATION COMPILED? This list has been compiled over many years from a variety of sources. By consolidating these sources, NY Natural Heritage is able to enhance their usefulness and identify gaps in knowledge. Information is gathered principally from fieldwork as well as from published and unpublished reports, herbarium specimens, and oral reports. When occurrences of rare plants are discovered in the field, quantity of individuals, quality, and location of the population are documented, and, if warranted, specimens and/or photographs are taken. These occurrences are then monitored, and changes in biology and land conservation status are recorded. Information gathered from all sources is mapped on a GIS (Geographical Information System or computerized mapping) and entered into a computer database that serves as a "communal memory" of rare plant, animal and natural community information from across the state. Electronic data are backed up with paper files; both are carefully protected from unauthorized access. Information that we gather and receive during the growing season is "transcribed" and entered into the database during the winter, thus information received in April of one year may not be available in the database until February or March of the following year. HOW DOES THE LIST CHANGE? Each winter, after entry of new information into the database is completed, the list is reevaluated by NY Natural Heritage staff, the State Botanist, and other botanists familiar with the state flora to decide if certain plant species should remain or be removed from the list, or if their rarity ranking should change. Recommendations for new plants to be added to the list are also evaluated. New York Natural Heritage Program Page ii WHY ARE PLANTS RARE? Plants are rare for different reasons. Some species have narrow habitat requirements that are met in only a few areas of the state or world. Other factors that contribute to the rarity of species are low reproduction rates and disturbance or loss of habitat from human-induced activities such as: pollution, development, introduction of exotic plants and pests, and over-collection of useful or attractive plants. Natural biological, climatic, and geological events can reduce or isolate widespread species resulting in global or local rarity or even extinction. However, at present, natural processes play a relatively small role in species extinction when compared to human activity. Often these factors work in combination to limit species distribution. Plants that are considered rare only in New York State are usually, but not always, on the edge of their range. They are more common elsewhere but exist at only a few localities in New York. WHY PROTECT RARE PLANTS? When rare plants are protected, distinctive populations of species are preserved along with their genetic variation within their natural habitat. This "biodiversity" of organisms is an important component of healthy, functioning ecosystems upon which all life on earth is dependent. Since there is usually a lack of complete information about the complex interactions within specific ecosystems to decide which plants are "expendable", all species should be protected. Some believe that plants are not only essential to survival of the human race, but they also have an equal right to exist because they have survived and adapted for as long as or longer than humans. Plants are also indicators of the quality of the environment. Some plants decline in numbers, or disappear altogether, under the influence of increased air or water pollution. Rare plants are also valued and protected because they are unusual - something